Clamp



A. M. COLE.

'GLAMPl y Patented July. 10, 1894.

(No Model.)

ATTORNEYS. .i

UNITED STATES PATENT OFFICE.

Y ALTA yMAY COLE, OF ASHEVILLE, NORTH CAROLINA.

CLAM P.

SPEGIFICATION forming part Of Letters :Patent NO. 522,651, dated July 10, 1894. Application filed October '7, 1893. Serial No. 487,497'. (No model.)

To all whom tm/ay concern:v t

Be it known that I, ALTA MAY COLE, of Asheville, in the county of Buncombe and State of North Carolina, have invented a newv and Improved Clamp, of which the following 1s a full, clear, and exact description.

The object of the in vention is to provide a new and improved clamp, which is simple and durable in construction, and more especially designed for the use of engravers, to securely hold plates, brushes, mirrors and other articles to be engraved, the clamp permitting the engraver to conveniently and with great ease en grave the article as required.

The invention consists ofcertain parts and details and combinations of the same, as will befully described hereinafter and then pointed out in the claims.

VReference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

lFigure 1 is a plan view of the improvement. Fig. 2 is a sectional side elevation of the same on the line 2--2 of Fig. 1; Fig. 3 is a face view of one of the clamping jaws; and Fig. 4t is a perspective view of a modified form of movable face plate for the jaw; and Fig. 15) is a sectional side elevation of an auxiliary ase.

The improved clamp is provided with a suitably constructed base A, formed either with a fiat bottom, as illustrated in Fig. v2, or adapted to be provided with a supplementary base B, made plano-convex and having its plane surface secured to the under side of the base A by means of set screws C.

In the base A is formed a recess engaged by a pin D, adapted to be secured lin place by a set screw E, to prevent the pin and the face plate F carried by the said pin, from turning. The pin D is provided on the under side of the face plate F with an enlargement D' having a sharp circular edge adapted to rest on the curved, upper part A of the base A, so as to permit of conveniently turning the face plate F .with the pin D without causing much friction.

In the face plate F are arranged slots or apertures F adapted to be engaged by clamps G, mounted to slide inward vor outward in the respective slot, according to the article to be supported by the clamps and face plate.

Each clamp G is provided with a body vG Y resting on the upper surface of the face plate F and provided on its under side with a threaded pin G2 extending through the corresponding slot F', and engaged at its lower end by a nut G3 adapted to abut against the under side of the face plate F to securely fasten the clamp G in place. The body G', is provided on its inner side with a seat G4 for theremov-E able and, movable facepiece G5, preferably having at its upper end a segmental recess G5, to engage the side of the article to be engraved. As illustrated in Fig. 4t, at G7, the movable face piece may be curved at its inner edge to conveniently engage such articles as cups, silver goblets, pitchers, and like articles. The lower end of each movable face piece is preferably formed with a dovetail fitted to slide in a correspondingly shaped dovetail groove formed in the body of the jaw. Aset screw Gi screws in the body G to engage the back of the movable face piece G5 or G7, to move-the same inward in engagement with the article so as to securely hold the latter in place between two, three, four or more clamps arranged in the slots F. l

In using the clamp the jaws G are moved suiiiciently far apart to permit'the engraver to place the article on the several face pieces,

after which the nuts G3 are secured in place, and then the set screws GB are screwed up so as to iirmly move the ,movable face piece G5 or G7 into engagement with the edge or edges of the article to be engraved. By this arrangement the article is securely held in place to permit the engraverto conveniently work on the face of the article with engraving tools. As the face plate F can be turned on the base A, any desired point of the article can be readily and conveniently brought under the operatingV tool. When using the supplementary base B, the entire device can readily be .turned on the curved surface of thesaid supplementary base, the latter resting on theusual ring pad.

claim as new and desire to secure by Letters Patent-- 1. Ina clamp, the combination with a base, Y

anda face plate mounted to revolve thereon, of clamp bodies adj ustably secured to the face plate and provided with seats on their inner faces, and face pieces Secured in the Seats of the bodies, and screws for adj Listing said face pieces, substantially as described.

2. AIn a clamp, the combination with a slotted face plate, of clamps, each consisting of a body having a seat on its inner face and provided on its under side with a threaded pin projecting through a slot of the face plate and engaged by a nut, and a face piece fitting in the seat of the body and engaged by a set screw in the body, substantially as described.

and described.

ALTA MAY COLE. Witnesses:

EDWARD E. ELLIOTT, MARY E. ELLIOTT. 

